Forensic Science: Crime on File #7
David Berkowitz – Son of Sam (Killings between 1976 and 1977)
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Better known as the Son of Sam or the .44 killer, David Berkowitz is a New York City serial killer who killed six people and wounded many others. His crimes became famous because of his letters to the media and the police, in addition to the reason he committed these crimes.

Reason for Killing
Berkowitz gave an odd reason for killing – he claimed that to keep the demons quiet, he started doing what they wanted. When dogs howled, he started believing that these dogs were demons asking him to kill women. He was convinced that his house owners, Jack and his wife, were part of the demon conspiracy and Jack was the commander in chief of all the dogs.

Later he shifted into another apartment but was still controlled by the demons in his mind. His new neighbor, Sam Carr, had a black Labrador which Berkowitz believed was possessed. He shot the dog. That did not provide any relief as he began believing that Sam Carr was possessed by the biggest demon, and perhaps Satan himself. Each night these demons told Berkowitz to kill and quench their thirst for blood.

He also used to write letters to the police and media, essentially taunting them with details of his killings.

Background
David Berkowitz, born 1953, was an adopted son of a middle class family in the Bronx. Although his parents loved him, Berkowitz carried a lot of anger and guilt inside him as he felt responsible for the death of his natural mother, who he was told died giving birth to him. Experts believe that could be the reason for his aggressive behavior.

He was devastated when his mother died of cancer and his father remarried and relocated to Florida, leaving him behind when he was 18.

Later he found out that his natural mother was alive and that he had a sister. There was a reunion, but it was too late for him by then as he preferred his isolation and delusions.

Killings and Sentence
Berkowitz received a 365 year prison sentence and told the FBI that he invented the “Son of Sam” stories to convince the court that he was out of his mind. He then said the real reason he killed was partly because he hated his mother for leaving him and partly his failure with women. He felt sexually aroused when he killed women, and he killed six of them.